diff --git a/iota/api.py b/iota/api.py
index d17eee0..a932ab1 100644
--- a/iota/api.py
+++ b/iota/api.py
@@ -511,8 +511,8 @@ def broadcast_and_store(self, trytes):
         """
         return extended.BroadcastAndStoreCommand(self.adapter)(trytes=trytes)
 
-    def get_account_data(self, start=0, stop=None, inclusion_states=False):
-        # type: (int, Optional[int], bool) -> dict
+    def get_account_data(self, start=0, stop=None, inclusion_states=False, security_level=None):
+        # type: (int, Optional[int], bool, Optional[int]) -> dict
         """
         More comprehensive version of :py:meth:`get_transfers` that
         returns addresses and account balance in addition to bundles.
@@ -539,6 +539,15 @@ def get_account_data(self, start=0, stop=None, inclusion_states=False):
             This requires an additional API call to the node, so it is
             disabled by default.
 
+        :param security_level:
+            Number of iterations to use when generating new addresses
+            (see :py:meth:`get_new_addresses`).
+
+            This value must be between 1 and 3, inclusive.
+
+            If not set, defaults to
+            :py:attr:`AddressGenerator.DEFAULT_SECURITY_LEVEL`.
+
         :return:
             Dict with the following structure::
 
@@ -562,6 +571,7 @@ def get_account_data(self, start=0, stop=None, inclusion_states=False):
             start=start,
             stop=stop,
             inclusionStates=inclusion_states,
+            security_level=security_level
         )
 
     def get_bundles(self, transaction):
diff --git a/iota/commands/extended/get_account_data.py b/iota/commands/extended/get_account_data.py
index 12ef466..7235d10 100644
--- a/iota/commands/extended/get_account_data.py
+++ b/iota/commands/extended/get_account_data.py
@@ -15,7 +15,7 @@
     iter_used_addresses
 from iota.crypto.addresses import AddressGenerator
 from iota.crypto.types import Seed
-from iota.filters import Trytes
+from iota.filters import Trytes, SecurityLevel
 
 __all__ = [
     'GetAccountDataCommand',
@@ -41,19 +41,20 @@ def _execute(self, request):
         seed = request['seed']  # type: Seed
         start = request['start']  # type: int
         stop = request['stop']  # type: Optional[int]
+        security_level = request['security_level']  # type: Optional[int]
 
         if stop is None:
             my_addresses = []  # type: List[Address]
             my_hashes = []  # type: List[TransactionHash]
 
-            for addy, hashes in iter_used_addresses(self.adapter, seed, start):
+            for addy, hashes in iter_used_addresses(self.adapter, seed, start, security_level):
                 my_addresses.append(addy)
                 my_hashes.extend(hashes)
         else:
             ft_command = FindTransactionsCommand(self.adapter)
 
             my_addresses = (
-                AddressGenerator(seed).get_addresses(start, stop - start)
+                AddressGenerator(seed, security_level).get_addresses(start, stop - start)
             )
             my_hashes = ft_command(addresses=my_addresses).get('hashes') or []
 
@@ -103,14 +104,15 @@ def __init__(self):
                 # Optional parameters.
                 'stop': f.Type(int) | f.Min(0),
                 'start': f.Type(int) | f.Min(0) | f.Optional(0),
-
                 'inclusionStates': f.Type(bool) | f.Optional(False),
+                'security_level': SecurityLevel
             },
 
             allow_missing_keys={
                 'stop',
-                'inclusionStates',
                 'start',
+                'inclusionStates',
+                'security_level'
             },
         )
 
diff --git a/test/commands/extended/get_account_data_test.py b/test/commands/extended/get_account_data_test.py
index f48a039..fd743f7 100644
--- a/test/commands/extended/get_account_data_test.py
+++ b/test/commands/extended/get_account_data_test.py
@@ -37,6 +37,7 @@ def test_pass_happy_path(self):
       'start':            0,
       'stop':             10,
       'inclusionStates':  True,
+      'security_level':   2
     }
 
     filter_ = self._filter(request)
@@ -58,6 +59,7 @@ def test_pass_compatible_types(self):
       'start':            42,
       'stop':             86,
       'inclusionStates':  True,
+      'security_level':   2
     })
 
     self.assertFilterPasses(filter_)
@@ -69,6 +71,7 @@ def test_pass_compatible_types(self):
         'start':            42,
         'stop':             86,
         'inclusionStates':  True,
+        'security_level':   2
       },
     )
 
@@ -89,6 +92,7 @@ def test_pass_optional_parameters_excluded(self):
         'start':            0,
         'stop':             None,
         'inclusionStates':  False,
+        'security_level':   2
       }
     )
 
@@ -369,7 +373,7 @@ def test_happy_path(self):
     Loading account data for an account.
     """
     # noinspection PyUnusedLocal
-    def mock_iter_used_addresses(adapter, seed, start):
+    def mock_iter_used_addresses(adapter, seed, start, security_level):
       """
       Mocks the ``iter_used_addresses`` function, so that we can
       simulate its functionality without actually connecting to the